Keep track of a long-running process

keep-track.sh

# Given a long-running process in the terminal:
#
#  - Ctrl+Z to suspend it
#  - Run `keep-track`
#  - Output resumes, when done will show a notification with the time it took for the process to run
#
# Can be customized with an `--icon` to `notify-send`, 
# maybe a sound effect added in the `&&` list.
#
function keep-track() {
  last_command=$(history | tail -1 | cut -d' ' -f3-)
  pid=$(jobs -p | sed 's/.*+\s*\([0-9]\+\) suspended.*/\1/' | head -1)
  start_time=$(date --date="$(ps -p $pid -o lstart | tail -1)" +%s)

  fg && notify-send "keep-track" "Done: $last_command, Time: $(expr $(date +%s) - $start_time)s"
}